paul, before any plane can take off, another delay, to shower in de-icing fluid. in philly, passenger seth wilson could barely see the planes outside. inside, he couldn't see the end of the customer service line either. then there's tom wagner. during a layover in houston, he fell asleep in the back of an express jet plane. and somehow, got locked inside. >> i woke up. and, uh -- the lights were out. i was like, what's going on? >> reporter: express jet says it's investigating. not everybody here in dallas was forced to sleep on a cot. there was a qantas flight forced back to the gate on friday. passengers were given the option to stay on the plane. the airline offered free entertainment, movies, and food. it was kind of like camping out on a 747, robin? >> sure it was, clayton. just like it. a weekend like that, you better pack a lot of patience. >> no question. try to make the best of it. >>> we turn to south africa. and the events celebrating the life of nelson mandela. 91 world leaders including four american presidents attending tomorrow's memorial service. p